TY - JOUR
T1 - Influence of reef isostasy, dynamic topography, and glacial isostatic adjustment on sea-level records in Northeastern Australia
AU - Rovere, Alessio
AU - Pico, Tamara
AU - Richards, Fred
AU - O’Leary, Michael J.
AU - Mitrovica, Jerry X.
AU - Goodwin, Ian D.
AU - Austermann, Jacqueline
AU - Latychev, Konstantin
N1 - Funding Information:
This work was funded by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (grant agreement no. 802414 to A.R.). T.P. acknowledges funding from the NSF EAR Postdoctoral Fellowship, the University of California President’s Postdoctoral Fellowship, and NSF OCE—2054757. F.D.R. acknowledges funding from the Imperial College Research Fellowship Scheme. J.A. acknowledges funding from NSF grant OCE-1841888. Funding is also acknowledged by Harvard University (J.X.M. and K.L.). The map in Fig. 1 a was created using ArcGIS software by Esri. ArcGIS®and ArcMapTMare the intellectual property of Esri and are used herein under license. Copyright Esri. All rights reserved. For more information about Esri®software, please visit (www.esri.com). We thank the Computational Infrastructure for Geodynamics (geodynamics.org) which is funded by the National Science Foundation under awards EAR-0949446 and EAR-1550901 for supporting the development of ASPECT.
Funding Information:
This work was funded by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (grant agreement no. 802414 to A.R.). T.P. acknowledges funding from the NSF EAR Postdoctoral Fellowship, the University of California President’s Postdoctoral Fellowship, and NSF OCE—2054757. F.D.R. acknowledges funding from the Imperial College Research Fellowship Scheme. J.A. acknowledges funding from NSF grant OCE-1841888. Funding is also acknowledged by Harvard University (J.X.M. and K.L.). The map in Fig. a was created using ArcGIS software by Esri. ArcGIS and ArcMap are the intellectual property of Esri and are used herein under license. Copyright Esri. All rights reserved. For more information about Esri software, please visit ( www.esri.com ). We thank the Computational Infrastructure for Geodynamics (geodynamics.org) which is funded by the National Science Foundation under awards EAR-0949446 and EAR-1550901 for supporting the development of ASPECT. ® TM ®
Publisher Copyright:
© 2023, Springer Nature Limited.
PY - 2023/12
Y1 - 2023/12
N2 - Understanding sea level during the peak of the Last Interglacial (125,000 yrs ago) is important for assessing future ice-sheet dynamics in response to climate change. The coasts and continental shelves of northeastern Australia (Queensland) preserve an extensive Last Interglacial record in the facies of coastal strandplains onland and fossil reefs offshore. However, there is a discrepancy, amounting to tens of meters, in the elevation of sea-level indicators between offshore and onshore sites. Here, we assess the influence of geophysical processes that may have changed the elevation of these sea-level indicators. We modeled sea-level change due to dynamic topography, glacial isostatic adjustment, and isostatic adjustment due to coral reef loading. We find that these processes caused relative sea-level changes on the order of, respectively, 10 m, 5 m, and 0.3 m. Of these geophysical processes, the dynamic topography predictions most closely match the tilting observed between onshore and offshore sea-level markers.
AB - Understanding sea level during the peak of the Last Interglacial (125,000 yrs ago) is important for assessing future ice-sheet dynamics in response to climate change. The coasts and continental shelves of northeastern Australia (Queensland) preserve an extensive Last Interglacial record in the facies of coastal strandplains onland and fossil reefs offshore. However, there is a discrepancy, amounting to tens of meters, in the elevation of sea-level indicators between offshore and onshore sites. Here, we assess the influence of geophysical processes that may have changed the elevation of these sea-level indicators. We modeled sea-level change due to dynamic topography, glacial isostatic adjustment, and isostatic adjustment due to coral reef loading. We find that these processes caused relative sea-level changes on the order of, respectively, 10 m, 5 m, and 0.3 m. Of these geophysical processes, the dynamic topography predictions most closely match the tilting observed between onshore and offshore sea-level markers.
UR - http://www.scopus.com/inward/record.url?scp=85171524363&partnerID=8YFLogxK
U2 - 10.1038/s43247-023-00967-3
DO - 10.1038/s43247-023-00967-3
M3 - Article
C2 - 38665194
AN - SCOPUS:85171524363
SN - 2662-4435
VL - 4
JO - Communications Earth and Environment
JF - Communications Earth and Environment
IS - 1
M1 - 328
ER -